Brake for self propelling vehicles



- www 5F. H. RICKER BRAKE FOR SELF' PROPELLING VEHILES Filed Nov. 9,1922 2 Sheets-SMM, l

Um.. 99 M9223 F. H. RICKER BRAKE FOR SELF PROPELLING VEHICLES Filed Nov.9, 1922 2 Shee'wshmt Z ing mechanism the present is enclosed by a casing(2) Patented @et 9,* i923.

BRAKE FOR SELF-PROPELLING'WEHCLIES.

Application iled November, 1922. Serial No. 599,874.

To all Be it'known that citizen of the United States, of Los Angeles,county of Los Iwhom may concern:

andr a resident Angeles,

5 lState of California, have invented a new and useful VBrake forSelf-Propelling Vehicles, of which the following is a specification.

a modification of the device described in` my (zo-pending application,Serial'No. 529- 877, the )rincipal distinction being that while in thelatter device the pistonsJ were made to cause a. fluid medium tocirculate which called for arathe'r complicated pumpdevice merely causesa column of fluid to reciprocate, elim inating thereby the valvesrequired by the `pumping mechanism. It is also proposed to i provide inconnection with this brake a convenient control for the same which is atthe same time adapted to control the throttle valve of the motorvehicle. Further objects and advantages of my device will appear as thespecification proceeds.

rl`he preferred form of my invention is illustrated in the accompanyingdrawing in lwhich Figure 1 shows a transverse section through my'brake,Figure 2 a side view of the same, partly in section, Figure 3 a top planview of the chassis of a motor vehicle having my brake attached thereto,Figure 4 a top plan view of;l my brake with the cover removed and Figure5 a detail view ofa valve control for the brake and the throttle valveof a motor vehicle. Fihile l have shown only the preferred form of theinvention it should be understood that.

various changes or modifications may be made within the scope of theclaims hereto attached without departing from the spirit of theinvention.

A portion of the main drive shaft (1) which extends longitudinally fromthe engine to the rear axle of a motor vehicle which latter ispreferably disposed in a place somewhere I, FLOYD H. RICKER, a

- casing to accommodate two cranks between which is supported a crankpin (ll). 60

theml must occupy aposition different from through which theycommunicate with the near the center of the car as indicated in Figure3. The shaft is broken within the The casing communicate-s throughpreferably .three tubes (6), (7) and (8) with a receptacle (9) supportedabove the casing. the tubes are arranged in such'a manner that theirendportions are disposed radially relative to the axis of the shaft (1)and at equal distance from one another which construction necessitatesthe bending of the tubes (6) and (8)v in the manner shown in Figure 1.lEach tube. has a piston (11) 70 reciprocating therein and the threepistons are connected with the crank pin (et) by means of suitableconnecting rods (12). rlhe receptacle (9) is'partly filled withda` fluidor'. pressure medium which is allowed 75 to enter the. tubes and to bearagainst the face of each piston so that as each piston p reciprocates inits particular tube a column of fluid reciprocates with the same. Itshould be observed that due to the particular arrangement of the threetubes the pistons will never occupy the same relative position ineachtube since at least one of that of the two others even if the latter twooccupy similar positions at certain times.

The three tubes are arranged inthe same transverse verticle plane andthe vpoitsfl) receptacle are aligned and disposed sufficiently far fromthe front' end (11i) of the receptacle to allow a slid-ing valve (16) to`reciprocatefrom an active position shown in Figure 2 in which all thetubes are covered to an inactive position in the iront end of thereceptacle. The valve is guided between two guide members (-17) and isrovided with a rod (18) extending through the front end of thereceptacle. lt will be readily seen that if .the valve is pushed overthe three tubes into the position shown in Figure' it will trap acertain portion of the fluid in at least one of the tubes and preventthe piston in that tube from coutinuing its outward stroke whichofcourse would prevent the shaft from rotating.

The rod (18) is preferably controlled by the driver of vthe machine bymeansv of the foot pedal (19). ln this connection it might be statedthat the same foot pedal can be l used at the same time to control thethrottle of the engine by means of a second rod (21) which are of equalstrength and allow the arm to come to rest in a neutral position withinthe gap. lt is understood 'that under normal conditions the drivercloses the throttle before setting the brake and the control shown inll1 igure 5 allows the driver to open the throttle by forcing the.sector rearward with his foot which advances the,

rod (2l) into driving position. .lf the driver wishes to stop all heneeds to do is to exert a forward pressure on the sector which willautomatically close the throttle and set the' brake. A spring (28,)maybe placed around the rod to bea against the receptacle with .one endand a colla-r (29) with the other end tending to normally hold thevalve,(l.6) in an inactiveposition.

l claim:

l. A brake for the drive shaft of a motor vehicle or the likecomprisinga tube adapted to receive a tluid by gravitation, a pistonsupporting said liuid having an operative connection with the shaftwhereby the piston is reciprocated in the tube when the shaft isrotatedand .valve means for stopping the reciprocating motion of thefluid so as` to prevent the piston from reciprocating and the shaft fromrotating.

' 2. A brake for the drive shaft of a motor vehicle or the likecomprising a tube adapted to 'receive a Huid by gravitation, a pistonsupportingsaid fluid having an operative connection with the shaftwhereby the piston is reciprocated in the tube when the shaft is rotatedand a sliding valve adapted to control the port area of the tube forlimiting or preventing the motion of the fluid.

. 3. A brake for the drive shaft of a motor vehicle or thelikecomprisingareceptacle for a pressure medium, a plurality of tubesextending from said receptacle with their' ends arranged radiallyrelative toithc shaft, a piston in each tube supporting the pressuremedium having an operative connection with the shaftI whereby the pistonis reciprocated when the shaft is rotated and a common recalca limitingor preventing the motion of the pressure medium, said control comprisinga sliding valve disposed in the bottom of the* receptaclev adapted toengage all the tubes simultaneously.

' 5. A brake for the drive shaft of a motor vehicle or the likecomprising a receptacle for a pressure medium, a plurality of tubesextending from said receptacle with their ends arranged radiallyrelative to the shaft, a piston in each tube supporting the pressuremedium-having an operative connectionwith the shaft whereby the pistonis reciprocated when the shaft is rotated and a coinmon valve controlfor the tubes for limiting or preventing the motion of the pressuremedium', said control comprising a sliding valve disposed in the bottomof the receptacle adapted to engage all the tubes simultaneously, and afoot pedal operatively connected therewith for actuating the saine.

6. A lvalve Control for a device ofthe character described comprising ahorizontal rod operatively associated with the valve, a sector pivotallysupported at its apex having an extension beyond its support extendinginto the path of the rod and -spring mea-ns for normally holding thesector in a neutral position', the latter being adapted to be renderedactive by foot pressure.

7. A controlling device for two valves dis posed at a'distancc from oneanother comprising two rods operatively associated with the valvessupported in longitudinal alinenient so as to leave a gap between thesame, a sector pivotally supported over said gap lia-vingen armextending into the gap and yielding 'means for normally holding thesector in an inactive position, the rods being adapted" tov be movedlongitudinally by the arm when the sector is rocked forwardly orrearwardly respectively..

FLOYD H. ltlClER.

